Typewriting-machine



Patented Aug. 3, 1920.

3 SHEETSSHEET 1.

J. DUCKSTINE.

TYPEWRITING MACHINE.

APPLlCATlON FILED AUG.10. ms

1 348,487. atented Aug. 3, 1920.

3 SHEETS-SHEET 2.

J. DUCKSTINE.

TYPEWRITING MACHINE.

APPLICATION FILED AUG. lo, I918.

Patented Aug. 3, 1920.

3 SHEETS-5HEET 3.

UNITED STATES PATENT OFFICE.

JULIUS DUCKSTINE, OF NEW YORK,

N. Y.. ASSIGNOR TO UNDERWOOD TYPEWRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPEWRITIN G-MACHIN E.

Application filed August 10, 1918.

T 0 all whom it may com-urn:

Be it known that l, Jr'mus DUCKSTINE, a citizen of the United States, residing in New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Typewriting- Machines, of which the following is a specification.

This invention relates to typewriting machines of the type in which superposed webs or plies are advanced around the platen of the typewriter and sections torn off when typed; the interleaved carbons being first drawn back to face fresh portions of the plies or webs. This type of machine is shown in the 'ernery & Smith Patent 1,132,055, in which the platen is lifted to permit the webs to be straightened out, to release the carbons, so that they may be drawn back. The platen in said patent is displaced upwardly and forwardly, being mounted upon a swinging frame, the linespacing lever and other arts remaining upon the platen frame. T 1e line-space devices upon the main platen-frame are con nected to the platen upon the swinging frame by means of a train of gearing, so that control of the platen is maintained.

Among the features of the present invention, are a simplified construction and operation of the means for displacing the platen partly with a view of rendering it unnecessary to use the \Vernery & Smith train of gearing between the line-space wheel and the platen, and otherwise to reduce the cost of the machine. In manufacturing machines in accordance with said patent. it is not customary to use both capital and lower-case letters, since the platen is unshiftable when in printing position, and only capital letters are used. In the present case. the platend'isplacing devices are such as to permit the platen to shift up and down for capital and lower-case letters. so that the advantage of the \Vernery & Smith invention is preserved without losing the advantage of the caseshift operation. Certain features of the invention are useful, however, even though no case-shift mechanism is employed and only.

capital or upper-case letters employed.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a sectional side view of an Underwood typewriting machine. showing a Specification of Letters Patent.

Patented Aug. 3, 1920.

Serial No. 249,222.

carbon-carrier of the type illustrated in said 'ernery & Smith patent, and also embodying one form of the present improvements; the parts being shown in printing positions.

Fig. 2 is a side elevation of the typewriter carriage, as seen from the right hand side of the machine.

Fig. 3 is a view similar to Fig. 1, showing the platen raised and the work-sheets straightened out for the purpose of retracting the carbons.

Fig. -l is a perspective view of the typewriter carriage and the carbon-carrier.

In the preferred manner of carrying out the present invention. three frames may be employed. The first is a carriage frame for producing the letter-feeding movements of the work-sheets: the second is the main platen frame, which may be a case-shift frame, that is, may shift up and down for capital and lower-case letters. as usual in the Underwood typewriting machine: and the third is a subordinate platen frame, which is hinged upon said main platen frame, to permit the platen to be displaced upwardly to permit the webs to be straightened out, relieving the carbons of friction, so that they may be drawn back. while the Work-webs remain stationary.

Preferably mounted upon said main platen frame is a shelf. which extends upwardly and rearwardly from the delivery side of the platen. to guide the work-sheets upwardly and rearwardly after they are typed. This delivery shelf is so mounted that it may be swung forwardly and downwardly to about horizontal position: and a connection is provided to the third frame (that is, the subordinate frame which carries the platen, and which is swingable up wardly on the main platen-frame). so that when said delivery shelf is drawn forward and down. the platen is swung upwardly until the webs are substantially straightened out. This swinging movement is illustrated as carrying the platen backwardly instead of forwardly, as in said patent. The backward movement is an advantage, because the platen is carried back out of the way together with the line-spacini lever and other line-spacing devices. which maintain their usual relationship to the platen. but which would be apt to collide with other parts if it were attempted to swing them foravardly.

The work-webs 10 are led in from the rear of the machine and run forwardly over an auxiliary carria e 11, which as in said \Vernery & Smit patent is attached to the main carriage 12, and which serves as a runway for the carbon-carrier 13, said carrier having transverse blades 14, each blade carrying a carbon 15, the carbons interleaved between the alias 10 of the work, which may be either a fan-fold web, as in said patent, or separate webs or plies. The assembled plies and carbons run forwardly and downwardly over a shelf 16 in rear of the platen 17 and forwardly under the latter, being pressed against the platen by releasable front and rear feed rolls 18, 19. The work is led upwardly around the platen to be printed upon by the types 20, and is advanced to a pa er shelf 21, which normally extends upwarcly and rearwardly from the upper front side of the platen.

The advance of the work line by line is effected by use of a line-space lever 22, Fig. 4, which has an arm 23 to operate a slide 24, the latter carrying a pawl 25 to drive the line-space wheel 26 which is fast upon the platen axle 27. Upon the ends of said axle are the usual hand wheels 28 for rotating the platen; and the usual detent 29 is pivoted to engage the notches in the line-- space wheel to hold the platen against rotation. This line-spacing mechanism is substantially the same in construction and operation as in the said Underwood standard typewriting machine, but the mounting of certain of its parts is modified, as will presently appear.

After a page or a section of the work-web has been typed line by line, the platen is lifted up (Fig. 3) to permit the sheets to be straightened out from their tortuous condition, and-thereby free the carbons. F0 this purpose. the platen is journaled by means of its axle 27 upon ends or end-plates 30, fixed to a horizontal rock-shaft 31, to make an. upwardly and rearwardly swinging frame, said rock-shaft extending along the platen in rear thereof and journaled at its ends in the ends of the main platen frame 32. The platen thus swings upwardly away from the aforementioned feed rolls 18, 19. The line-space wheel 26, the platen detent 29 and the reciprocating line-spacing devices, including the lever 22. are all mounted upon this swinging frame 30, to swing up therewith, so that the platenis always connected thereto and always under the control of the detent and of the hand wheels 28 on the ends of the platen axle. The ends of the main platen frame 32 are cut out at 33 to permit the upward swinging of the platen axle.

To accomplish the raising of the platen in this manner, the delivery shelf 21 can be swung forwardly. to clear the rising platen. Said shelf is preferably fixed upon a horizontal rockshaft 34 extending from end to end of the laten and pivoted at its ends in the main p aten-frame 32. This mounting of the delivery shelf is independent of the mounting of the swinging frame 30, 31, in which the platen is directly journaled.

Preferably mounted upon shaft 34 is an arm 35, having a longitudinal slot 36 to engage the platen axle 27, which extends through the end-plates 30 of said swinging frame, so that the pulling forward of the shelf, by reason of the slot-and-pin connection. formed by said axle 27, and said slot 36, elevates the frame 30. 31. thus simplifying the operation. Said slot may have a crook 38 in its outer end. which is concentrio to the axis of the rock-shaft 34, so as to lock the swinging frame 30, 31 in its raised position, as in Fig. 3.

To hold the swinging platen frame 30,-31, down in working position, there are provided at the ends of said frame, latches 39, 40, provided with springs 41, -12, and pivoted upon studs 43, 44, secured upon the ends of the shifting platen frame. 32; stud -13 being mounted upon an upright arm 45 which rises from the inner end of a cylindrical stud 46 which projects inwardly from the left-hand end of the platen-shift frame 32, and through which passes the end portion of the shaft 34. These latches 39, do en age studs 47, 48 which project inwardly .rom the ends 30 of the swinging platen frame, thereby holding the same down. The latches are provided with finger-pieces, so thatotliey may be swung away from the pins and thereby release the swingin frame. and permit the delivery shelf 21 to be swung up about its rock-shaft 34, to enable the pinand-slot connection 36, 27, to raise said swinging frame 30, 31. The arm 35 may be duplicated at the ends of the platen, and these arms 35 may have hubs 49 loose upon the shaft 34, and having cut-away portions 50 in which work pins 51 projecting from the shaft 34:, so that there will be some movement of the shaft and shelf before the arms 35 begin to lift the platen.

When the platen is locked up in its ele vated position, as in Fi 3, the right-hand latch 40 engages a stu 52 which projects from the right-hand arm 35, to hold this arm up, and the arm 35 at the other end of the platen may be held up in like manner.

W hile the parts are in the Fig. 3 position, the sheets 53 may all be pulled forwardly until they reach a gage 54, which is provided upon a staff 55, which extends at Fig. 3 forwardly, and at Fig. 1 upwardly from the delivery shelf 21. The sheets are held in this position by the operator while a handle 56 is manipulated to ush back the carboncarrier 13 to brin the carbons into coiiperation with fres portions of the webs. Then the latch 40 may be released and the delivery shelf 21 may be swung up rearwardly to normal position. The pin-andslot connection 27, 36 causes the platen to drop to normal or printing position.

lVhile said platendisplacing devices may be used upon non-shifting machines, that is, machines which print only capital letters, one of the features of the present invention is the provision of an improved machine of the lVernery & Smith type, which is adapted to print upper-case and lower-case characters; and for that reason the platen-displacing frame 30, 31 is hinged upon said second frame 32, which is shiftahle up and down in the, manner of the platen frame of the usual I nderwood typewriting machine, for the purpose of bringing up )er-case and lower-case types into use. his second frame is mounted and operated in substantially the same manner as the usual platenshift frame in the Underwood typewriter; said frame having a roll 57 running upon a. shift-rail 58 which is mounted upon a swinging frame 59 operated by the usual system of shift keys 6i); and the main carriage i2 is connected to said case-shift frame 32 by means of the usual bail comprising a rock-shaft 61 mounted in the rear of the carriage and having at its ends forwardly extending arms or lift hooks. in which are jo'urnaled studs or trunnions 62 projecting from the ends of the case-shift frame The stops which limit the upward and downward movements of the case-shift frame may be the same as those usually employed in said Underwood machine.

Variations may be resorted to within the scope of the invention, and portions of the im )rovements may he used without others.

llaving thus described my invention, I claim:

1. In a typewriting machine, the combination with a platen, of a frame on which said platen is journaled, a second frame upon which the first frame is hinged to swing upwardly and rearwardlv out of working position. and a system of line-spacing mechanism carried upon said swinging frame.

2. In a typewriting machine, in combination,

mounted in one of said frames. and means for feeding worksheets about said platen, including a feedroll mounted in the other of said frames, the first-mentioned frame being so mounted relatively to the second that it may be shifted to a position such as to separate said platen from said feed-roll and permit the curvature of said sheets about said platen to be sufliciently reduced to provide for their free relative adjustment.

3. In a typewriting machine the combination with a platen, of a frame on which said platen is journaled, a second frame upon which the first frame is hinged to swing upwardly and rearwardly out of working position, a system of line-spacing mechanism carried upon said swinging rame, and a carriage upon which the second frame is mounted, said second frame being shiftable to permit the use of upper and lowercase types.

4. In a typewriting machine, in combination, a platen, a frame in which said platen is journaled, line-spacing mechanism for said platen mounted in said frame, a second frame in which said first frame is mounted, and means for feeding work-sheets about said platen, comprising a feed-roll mounted in said second-mentioned frame, to cooperate with said platen when in normal position, the first-mentioned frame being so mounted relatively to the second that it may be shifted to a position such as to separate said platen from said feed-roll and permit the curvature of said sheets about said platen to be sufliciently reduced to provide for their free relative adjustment.

5. In a typewriting machine, in combination, a carriage, a platen shiftably mounted in said carriage, means for feeding worksheets under and about said platen, a delivery shelf normally extending upwardly from s: id platen and movably mounted in said carriage independently of the platen mounting, and a platen-shifting connection through which said shelf when moved for wardly and downwardly will cause said platen to be elevated to a osition above its normal position and free rom said feeding means. so as to )ermit the curvature of said sheets to be sufficiently reduced to provide for their free relative adjustment.

6. Ina typewriting machine, in combination, a frame, a platen journaled in a mount hinged to said frame, means for feeding work-sheets under and about said platen, a delivery shelf normally extending upwardly from said platen and having a separate hinged connection with said frame, and a platen-shifting connection through which said shelf when moved forwardly and downwardly will cause said platen to be elevated to a. position above its normal position and free from said feeding means, so as to permit the curvature of said sheets to be sufiiciently reduced to provide for their free relative ad 'ustment.

In a typewriting machine, in combination, a carriage, a platen shiftabl mounted in said carriage, means for fee ing worksheets under and about said platen, a delivery shelf normally extending upwardly from said platen and movably mounted in said carriage independently of the platen mounting, and a platen-shifting connection throu h which said shelf when moved forwatd y and downwardly will cause said platen to be elevated to a position above its and free from said feeding means, so as to ermit the curvature of said sheets to be su ciently reduced to provide for their free relative adjustment, said platen-shifting connection comprising parts for causing said platen to be held locked in elevated position when said shelf is in its lowered position.

8. The combination with a revoluble platen.of a main platen frame, a shelf normaily extending upwardly and rearwardly from the delivery side of the platen, said shelf mounted upon said platen frame so that it may be swung downwardly and forwardly, a hinged frame upon which said platen is journaled, said hinged frame mounted upon said main platen frame, and a connection between said hinged frame and said paper shelf such that when the shelf is drawn forward and down, the platen is swung upwardly to permit the work to assume a substantially straight condition.

9. In a typewriter machine, in combina tion, a letrenspacing carriage, a pair 0 frames mounted therein, a platen and linespacing mechanism therefor mounted in one of said frames, means for feeding worksheets about said platen, including a feednormal position -roll mounted in the other of said frames,

and means for shifting said frames relatively to said carriage from one case-position of said platen to another, the first-mentioned frame being so mounted relatively to the second that it may be shifted to a position such as to separate said platen from said feed-roll and permit the curvature of said sheets about said platen to be sufficiently re duced to provide for their free relative adjustment.

10. In a typewri ing machine, in combination. a letter-spacing carriage, a. pair 0 frames mounted therein, a platen and linespa cing mechanism therefor mounted in one of said frames, means for feeding worksheets about said laten, including a feedroll mounted in the other of said frames, and means for shifting said frames relatively to-said carriage from one case-position of said platen to another, the first-mentioned frame being hinged to the second, so that it may he swung upwardly and rearwardly to a position such as to separate said platen from said feed-roll and permit the curvature of said sheets about said )laten to be sufii ciently reduced to provite for their free relative adjustment.

ll. T he combination of a laten, a carriage, a platen-shift frame shiftable up and down therein. a swinging frame upon which said platen is journaled, said swinging frame hinged upon said platen-shift frame to swing the platen upwardly and rearwardly out of working position, and a train of line-spacing mechanism mounted upon said swinging frame.

12. In a typewriting machine, in combina tion, a arriage, a platen shiftably mounted in said carriage, means for feeding worksheets under and about said platen. a delivery shelf normally extending upwardly from said platen and movably mounted in said carriage independently of the platen mounting, a platen-shifting connection through which said shelf when moved forwardly and downwardly will cause said platen to be elevated to a position above its normal position and free from said feeding means, so as to iermit the curvature of said sheets to be suficiently reduced to provide for their free relative adjustment. and means, comprising a common latching member, for normally holding said platen locked when in normal position and for holding said shelf locked when in lowered position.

13. The combination of a main typewriter carriage, an auxiliary carria e over which work-webs may be led into tihe machine, a revoluhle platen, a swinging frame carried by said main carriage, a platen journaled upon said swinging frame to swing up wardly and rearwardly to enable the webs to be straightened out, and a platen-shift frame mounted to shift up and down on said main carriage; said swinging frame being directly hinged upon said platen-shift frame.

ll. In a typewriting machine, in combination, a carriage, a platen shiftably mounted in said carriage, means for feeding worksheets under and about said platen, a deliveuy shelf normally extending upwardly from said platen and movably mounted in said carriage independently of the platen mounting, a platen-shifting connection through which said shelf when moved forwardly and downwardly will cause said platen to be elevated to a position above its normal position and free from said feeding means, so as to ermit the curvature of said sheets to be en ciently reduced to provide for their free relative adjustment, said platen-shifting connection comprising parts for causing said platen to be held locked in elevated position when said shelf is in its lowered position, and means, comprising a common latching member, for normally holding said platen locked when in normal position and for holding said shelf locked when in lowered position.

15. The combination of a main typewriter carriage, an auxiliary carriage over which work-webs may be led into the machine, a revolulile platen. a swinging frame carried by said main carriage, a platen journaled upon said swinging frame to swing up wardly and rearwardly to enable the webs to be straightened out, a platen-shift frame mounted to shift up and down on said main carriage: said swinging frame being directly hinged upon said plateirsliift frame, and a delivery shelf mounted upon said platen-shift frame and extending above said platen and connected to said swinging frame to lift the platen as the shelf swings down.

16. The combination of a revoluble platen, a frame in which said platen is ournaled for movement upwardly away from printing position, a rock shaft, a delivery shelf for said platen, said shelf mounted upon said rock shaft, and an operative connection between said rock shaftand the frame in which said platen is journaled to effect a movement of the platen concomitantly with a movement of the delivery shelf.

17. The combination of a revoluble platen. a frame in which said platen is journaled for movement upwardly away from printing position, a rock shaft, a delivery shelf for said platen, said shelf mounted upon said rock shaft, and means including a cam connection between said rock shaft and the frame in which said platen is journaled to effect a movement of the platen to a position above and to the rear of its working position as the delivery shelf is swung about said rock shaft downwardly in front of the platen.

18. The combination of a revoluble platen, a frame in which said platen is journaled for movement upwardly away from printing position, a rock shaft, a delivery shelf for said platen, said shelf mounted upon said rock shaft, an operative connection between said rock shaft and the frame in which said platen ,is journaled to effect a movement of the platen upwardly out of working position as the delivery shelf is swung about said rock shaft downwardly in front of the platen, an arm being mounted upon said rock shaft and having a longitudinal slot, and apin provided upon said platenelevating frame to engage said slot.

19. The combination of a revoluble platen, a frame in which said platen is journaled for movement upwardly away from printing position, a rock shaft, a delivery shelf for said platen, said shelf mounted upon said rock shaft, an operative connection between said rock shaft and the frame in which said platen is journaled to effect a move ment of the platen upwardly out of working position as the delivery shelf is swung about said rock shaft downwardly in front of the platen, an arm being mounted upon said rock shaft and having a longitudinal slot, and a pin provided upon said platen-elevating frame to engage said slot, said slot hav ing at its outer end a bend to lock the platen frame 11 out of working position.

20. The com ination with a revoluble platen and a frame in which it is journaled, of a paper shelf, means connecting said paper shelf to said frame to displace the platen u wardly out of working position as the shel is moved downwardly in front of the platen, and means for automatically lockin the platen in its elevated position.

21. The'combination with a revoluble platen and a frame in which it is jonrnaled, of a paper shelf, means connecting said paper shelf to said frame to displace the platen u Wardly out of working position as the she] is moved downwardly in front of the platen, means for automatically locking the platen in its elevated position, and a releasable latch device to hold the platen down in working position.

22. The combination with a revoluble platen and a frame in which it is journaled, of a paper shelf, means connecting said paper shelf to said frame to displace the platen upwardly out of workingposition as the shelf is moved downwardly in front of the platen, and means for automatically locking the platen in its elevated position, a latch device being provided for locking said paper shelf in its forward depressed posit ion.

23. In a typewriting machine, in combination, a letter-spacing carriage, a case-shift frame mounted therein, a platen frame mounted in said cascshift frame, a platen and line-space mechanism therefor mounted in said platen frame. and means for feeding work-sheets about said platen, including a feed-roll mounted in said case-shift frame, said platen frame being hinged to said caseshift frame, so that it may be swung upwardly and rearwardly to a position such as to separate said platen from said feed-roll and permit the curvature of said sheets about said platen to be sufficiently reduced to provide for their free relative adjustment.

24. In a typewriting machine, in combination, a letter-spacing carriage, a pailof frames mounted therein, a platen and linespaciug mechanism therefor mounted in one of said frames, means for feeding worksheets about said platen, including a feedroll mounted in the other of said frames, means for shifting said frames relatively to said carriage from one case-position of said platen to another, the first-mentioned frame being so mounted relatively to the second that it may be shifted to a position such as to separate said platen from said feed roll and permit the curvature of said sheets about said platen to be sufliciently reduced to provide for their free relative adjustment, and means for normally holding said first-mentioned frame locked against shifting movement when said platen is in its normal position. \h

25. In a typewriting machine, in comb nation, a letter-spacing carriage, a pair of frames mounted therein. a platen and linespacing mechanism therefor mounted in one of said frames, means for feeding work- I to separate sheets about said platen, includin a feedroll mounted in the other of said frames,

means for shifting said frames relatively to said carriage from one case-position of said f laten to another, the first-mentioned frame 11 to provide for their free relative adjustment, and means for locking said first-mentioned frame against movement relative to said second-mentioned frame when said platen is in either its normal or its shifted position.

26. The combination with a revoluble platen, of a frame upon which it is mounted for movement up out of working position, a platen-shift frame upon which the first frame is mounted, a carriage upon which said platen-shift frame is mounted for shifting the platen up and down to bring upper and lower-case characters into use, saidplaten-dis )lacing frame hinged upon the platen-shiiting frame to swin upwardly and rearwardly, and a set of linespacing mechanism carried by said platendisplacing frame.

JULIUS DUCKSTINE.

Witnessesf CATHERINaA. Nnwnnn, EDITH B. LIBBEY. 

